Pump.



R. w. MURRAY. l

Patented May 1, 1917. 2 SHEETS-SHEET l /z? :lf2/7 :2Q-f* IFA me Nawns persas cm. moz-@Lima wnsymcnm, n c

Patented May 1, 1917.

PUMP.

APPLICATION FILED Dc.5.1913.

ROJBERT W. MURRAY, 0F GORNING, OHIO.

PUMP.

Specification of Letters Patent.

Patented May i, 1917.

Application filed December 5, 1913. Serial No. 804,947.

To all 'whom t may concern.'

Be it known thatvI, ROBERT W. MURRAY,

a citizen of the United States, residing at Corning, in the county of Perry and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a specication.

My invention relates to pumps and aims particularly to provide a pump for use in mine or other work wherein it is found necessary to pump and convey acid or alkaline solutions. In handling solutions of these types, it has been found that the life of metal or similar pumps is abnormally shortcried, owing to the destructive properties of these solutions. A pump constructed practically in its entirety of wood, has been found very desirable owing to the comparative cheapness with which it may be manufactured and its increased life over other types of pumps. However, up to the present, these wooden pumps have been made of extremely heavy material to eliminate the seepage of the pumped uid therethrough when the same engages the ends of the bers forming the grain. There are other reasons why it is undesirable to have the fluid engage the ber ends during its flow through the pump, but the forcing of the uid along the bers under pressure, is the main objection. Therefore, I prevent the contact of the flowing fluid during its passage through the pump with the end bers, or, in other words, where the building of the pump has required cutting across the grain of the wood, by the provision of liners, this being especially true where the distance between the passage and the exterior wall of the pump body is very small. In addition to this, I preferably make all these liners of wood, whose grain is adapted to run in the direction of the flow of the fluid therethrough.

In the form of pump wherein there are a plurality of'cylinders and a dividing wall between these cylinders, I have found it desirable to provide this dividing wall, when the same is made of wood, with anon-porous material immune to the destructive action of the uids handled.

Another object of my invention resides in an improved type of valve mechanism wherein the valve, when in operation, is normally forced toward its seat by an air cushion. In its preferred form, the weight of the valve itself is utilized in moving it to a position of closure as well as the resilient effect of the air cushion. It may also be desirable to use supplemental closing means constructed of metal such as a spring, and, where acid or alkaline waters are handled, it is desirable to place this spring in. that portion of the valve chamber wherein the air is confined to form the air cushion. In this manner, the air itself prevents a rising of the water to a point where it may engage the spring. It is to be understood that the flowing water and the operation of the valve will compress the pocketed air and this compressed air acts after the manner of a diving bell to prevent the rise of the water.

The preferred embodiment of my inven` tion is shown in the accompanying drawings in which similar characters of reference designate corresponding parts, and in which:

Figure l is a top plan view of my pump,

Fig. 2 is a section taken on line A-A of Fig. l and looking in the direction of the arrows,

Fig. 3 is a section taken on line B-B of Fig. l and looking in the direction of the arrows,

Fig. 4 is a section taken on line C-C of Fig. l and looking in the direction of the arrows, and,

Fig. 5 is a section taken on line D-D of Fig. 1 and looking in the direction of the arrows.

As stated, the body portion of my pump is preferably made of wood, this body portion being shown in the present instance, as being formed of four wooden blocks designated l, 2, 3 and l. The blocks l and 2 are held in normal position by means of a plurality of vertical bolts 5, whose nuts 6 are screwed into position to maintain ag rigid structure. Certain of these bolts bear against clamping strips such as shown at 7 while the remainder simply bear upon wash* ers 8 similar to the washers on the underside of the pump. Likewise, the blocks 3 and 4l are held together by vertical bolts 9, whose nuts bear upon similar clamping strips and washers. To hold the two sections together, I have provided horizontal bolts 10, whereby a unitary body portion is formed' which is normally supported from the ground by base members 1l.

The block l is bored longitudinally, as shown at 12, and transversely as shown at 13, to form the entrance end of the pump, it being understood that suitable pipe connections are provided whereby the water may be drawn to the intake port 13. In constructing my pump of wood, I have found it desirable to bore the entire length of the block 1 and thereafter to plug up the ends, as shown at 14, whereby the only communicating passage, excepting the valve mechanism, which the chamber 12 has, is the intake passage 13. Leading vertically into the chamber 12 are passageways 15 leading to the valve chambers 16 formed in the block 2. The upper ends of the passages 15 are each bored to receive the spiders or members 17 forming the valve seats. It will be noted that the members 17 'are provided with a shoulder 18 and an upstanding cylindrical portion 19, the cylindrical portions being provided with vertically extending passage ways 2O through which the water is adapted to flow. rIhe center portion of these spider valve members are socketed to receive vertical guide stems 21, upon which the valve bodies 22 are adapted to slide when in operation. It will be understood that, up to the present, all the parts described are preferably made of wood and a wooden valve body operating directly upon a valve seat would sufce, but I preferably.

provide a supplemental seating member 23, which member may be made of rubber or similar material.

During the normal operation of the pump, the suction of the piston, to be presently described, is communicated through the transverse bores 24 in the block 2 to the valve chamber 16, whereby the valve body 22 and the seating member 23, are elevated, allowing the inflow of water or other fluid through the passages 13, 12 and 15. However, this inflowing water engages the ends of the fibers forming the grain in both the passages 15 and the valve chambers 16 and it may, therefore, be easily forced longitudinally along these fibers. In addition, the grain of the wood may be rather coarse, in which event it is ,also desirable to provide engaging surfaces of a close grained nature. This I do by the provision of a liner 25 for the chamber 12, liner 26 for the passage 15, liner 27 for the valve chamber 16 and liner 28 for the passage 24: 'Ihese liners, when made of wood, are constructed to have their grain run in the direction of normal flow of the uid through the pump. It will, therefore, be apparent that,

.where very close grained wood is provided for making these liners, the absorption by the body portion of the pump is very slight.

The liner 27 forming the valve chamber 16 is provided with an interior shoulder 29, into which the upper portion 30 of the valve body 22 is adapted to operate. It will be noted that the upper portions of these valve bodies are socketed to form a seat for a coiled spring 31 operating in a manner to and 4 and after the valves are in their ap- 70 plied position, these open ends may be closed by cover plates 32 between which and the top wall of the blocks 2 and 4 are interposed sealing members 33, the entire capping structure being held and forced into posi- L tion by the bolt and nut structures 34. These capping` structures are forced into air tight relation with other coperating eX- terior surfaces of the body, from which it will be apparent that a quantity of air will be held pocketed above the valve body 22. During the normal operation of these valves, they are forced upwardly against such air cushions and the air slightly compressed, 4 whereby the rise of the water above the shoulders 29 of the liners 27 is prevented. These air cushions not only serve the purpose of a resilient packing for forcing the. valves upon their seats, but also they provide an absolutely safe chamber within which the springs 31 may be placed to be free from the destructive action of the fluids handled.

By reference particularly to Fig. 3, it will be noted that the passage 24 formed by the liner 28, is the means of communication between the intake valves in the block 2 and the cylinders 35 formed in the block 3. These 'cylinders 35 are in communication, through vertical passages 36, with outlet valve structures carried by the block 4 identical in construction with those already described in connection with the intake ports in the block 2 and the reference numerals applied to these latter mechanisms, are equally applicable to the outlet valve structures. rIhe two cylinders 35 are in longitudinal alinement and are spaced from each other by means of the dividing wall formed by the wooden block 37. This block is preferably provided with a layer of nonporous material 38 to prevent the seepage of the water from one cylinder into the other. Both the cylinders 35 are provided with liners 39 and the passages 36 with liners 40, these liners being constructed in a manner similar to those already referred to. From the outlet valve structures in the block 4, water enters a communicating passage 41 carrying a liner 42, and a common outlet passage 43 provided with a liner 44 and thence to any desired point of discharge.

Operating within each of the cylinders 35, there is a piston 45 of a diameter to allow sufficient clearance between its walls vand the interior walls of the liners 39, the

outside ends of these liners being counterbored to receive the packing 46 clamped into nonlocking engagement by forcing the packing ring 47 toward the face plate 4S by means of the screws 49. The outside ends of both the pistons 45- are rigidly supported by a cross head structure 50 slidably mounted in any preferred type of guide block 51. lBoth pistons are driven simultaneously, and the cross head 50 of the piston, toward the left and the cross head 52 of the other piston, are connected by means of the connecting rods 53 and 54, the connecting rod 53 being slidably journaled in bearings 55 carried upon the outside of the block 3 and the connecting rod 54 sliding through a longitudinal groove 56 formed in one wall of the block 1. Therefore, only one guide block is provided and the application of power to the cross head 50, will cause a synchronous operation of the two cylinders and their valve structures.

From the above description, taken in connection with the accompanying drawings, it will be apparent that I have provided a comparatively simple type of operating valve, which is provided with at least two novel features, that is, the air cushion for permitting a resilient packing for each valve during its normal operation and, second, the provision of an air pocket wherein supplemental closing means in the form of springs may be mounted and at all times be free from the destructive action of the waters handled. It will also be apparent that by the use of the liners, the size of the body portion may be materially reduced and that seepage through the walls of the body portion will be reduced to a minimum. Where Wood liners are provided, they are preferably made of close grain Wood and so constructed that the grain thereof runs in the direction of the normal flow of the water through the pump.

What I claim, isz.

A pump comprising a wooden body portion having opposing cylinders therein, a piston for each cylinder, a wooden plug forming the dividing wall between said cylinders, a layer of non-porous material forming a portion of said plug to prevent seepage of the pumped fluid from one cylinder to the other.

In testimony whereof I aflix my signature in presence of two witnesses.

ROBERT W. MURRAY.

Witnesses: I

JOSEPH O. FARRELL, C. D. LEARNED.

copies of this patent may 'be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

